Pump.



UNITED STATES IA'lENT OFFICE.

WILLS M. FLEMING, 0F HULYOKE, MQSAGHUSETTS, ASSIGNOR TO INTERNATIONAL STEAM PUMP COMPANY, GORPORATION 0F NEW JERSEY.

Patented Sept. 8, 1914.

Application ed June 5, 1913. Serial No. 771,841.

and useful Improvements in Pumps fully I described and represented in the following specification and the accompanying drawings, forminga part of the same.

rl`his invention relates to improvements in pumps,-and particularly, to a single-actingr suction pump intended for use under conditions Where the liquid supply to the pump is either hot or is intermittent or deficient.

There has existed much diiiculty in the operation of pumps heretofore employed under such conditions, because the cylinder becomes air or vapor bound. owing to the fact that all the liquid is expelled, and air or vapo!"accumulating beneath the piston is compressed and expanded without actuating either the suction or discharge valves. For this reason, the pump will fail to operate until the cylinder clearance spaces arc primed or lill/cd with liquid. The conditions pointed out exist generally in pumping systems handlingr hot fluidsor on closed systems, such, for example, as are employed in connection with the operation olE filaire-gates, hydraulic governors. cyanid gold'extraction filters, and. the like. These conditions` are very tryin;r with thc class oi pumps hitherto employed 1for such purposcs and partake somewhat of the conditions under which a condenser or hot-well pump must operate while ai thc .nunc timo introducing: the l'nrthcr flillicnltj. that thc pump must lils its` own supply, whcrcaa` a hot-well or coodcowlpomp usually rcccives its supply 1 l'roi, :i source iiyshcr than the pump iulct.

ll is lhc purpose of the prcscnt invention to provido a pump which will work satisA l'ariorily in practice under thc special conditions outlined above and with this general object in view. my invention comprises a single-acting plunger pump. capable of acting as a vacuum pump and air compressor-` or as a liquid pressure pump. and in the irei'errcd embodiment oi' the invention tirce sets ol" such plunger pumps are arranged in conjunction with a common inlet and a common outlet chamber, Vthe respective plungcrs boing arranged to operate out ot' phase with each other and prcfcralily i200 apart,

pump embodying my invention in its preferred form. Fig. 2 is a vertical section of the same through one of the pump cylinders, some of the parts bein y shown in elevation. Fig. 3 is a detail. vertical section, partly in elevation, of: the valve-chest, showing one set of valves. h i

Referring to the drawings` 1 indicates a pump cylinder of the outside packed pl|unn-r-pun1p type, having a single port or transverse passage 2 sloping upward, the inner face oi' said port having its lower edge coincident with the bottom of the pump cylinder, while its u per edge is not higher than tht` lower edge o the outer fact'l of Said port cr passage. In this cylinder is located a plungrcr 3 of such length relative to the cylinder that when `the plunger is at its` cxtreme limit downward. it will leave a slight clearance space lwtivcen its bottom and the bottom ot' the cylinder` while at the same time its upper end will project beyond the cylinder, a suitable outside packing gland l being provided, which gland serves to compress thc packing 5 contained in a recess or counter bore at the upper end of the cylinder, stud bolts and nuts as indicated at (i being provided to force the gland 4 against the packing. At the u )per end of the cyli'nder and surrounding tlie plunger gland is a basin whose walls 7 extend considerably above said lgland. This basin serves to contain a liquid and thus forms a means for sealing thc plunger air-tight. lVatcr may be used. as the sealing liquid and its level should be automatically kept above the top lli' thc gland in order to seal the plunger and thereby prevent leakage of air into thc wyliniler. li`urthermore, the. water serves to lubricate and cool the plunger when the pump is operating as an air compressor or vacuum pump.

At one side of the cylinder is secured a 110 met outward flow of thia'liquid into the intermediate space serving to seal the inlet valve, andthe remaining outowing liquid inal again lliif the intermediate space and us driving loitbe air or vapor before it through the outlet valve. Upon the next upwardstrokeof the ump, the liquid again Hows back from t e intermediate s we tn the bottom of the cylinder and 1g t ereby frees the inlet valve, thereby allowing the same to lift relatively easily, and rmitting the use of a sensitive inlet valve. wingto this sealing of the inlet valve by the netained .liquid in combination with the liquid seal at the top of the pump, the latter is able to operate in a. suiiiciently satisfactor manner as in air or vapor compressor,

' while at the same time owing to the withdrawal' of the sealing liquid rom the inlet valve upon the commencement of' the upward movement of the plunger, the said inlet valve can be made to lift easily and thereby the pump will work satisfactorily` as a vacuum pump.

0f course, ,under those conditions where the supply of liquid to the pump is sufficient, 'the p unger pum operates in the welll known/way, the cy inder filling with liquid on the suction stroke, the principal part' of .so which is discharged on the delivery stroke.

Thus' the pump is eminently satisfactory for use under the special conditions hereinbefore outlined. t

The description thus far given is directed to a single cylinder pump, but in the best embodimentof my invention th-ree such umps'are combined to form a three-cyliner, sin le-acting, outside-packed, plungerump, t e cranks of the respective lun ers 40 eing arranged 120 apart so that t e p ungers operate in a threehase relation to each other. In this form o pumping a paratus, the inlet and outlet chambers of the valvechest are common to all the pump cylinders,

45 While the intermediate spaces between the' respective inlet and out] t valves of each' cylinder are individual or the respective cylinders; furthermore, the liquid sealing evicc at the top of' the cylinders is common to all, that is to say, constitutes a trough-like basin, and is provided with means for causing a circulation of liquid through said basin while maintaining a level of said liquid above the respective packing glands 0f the cylinders. The means indicated in Fig. 1 consist of an inlet pi e 35 and an outlet pipe 36 located at the esired height tOmaintain the required liquid level. By this arrangement of the lungcr sealing device, not only is the sealing and lubrication accomplished as hercinbefore explained, but, in addition, there is an equalization of temperature of the several plungeis and cylinders, thus avoiding the disadvantages 55 due to unequaled expansion and contraction.

connection with a crank driving mechanism is particularly advantageous, in that when the crank is up the crosshead also is up above the slides and hence the adjusting devisie for the ciossliead is particularly accessi e:

What I claim is 1. In a pump, the combination, with a vertical cylinder having a transverse ort extending upward from the lower ten of the cylinder, of a valve-chest having inlet and outlet valve-seats separated by an interveiling space whose bottom wall is above the bottom of the cylindler and arranged `to drain therein, with which space the upper end of the transversel ort connects, upwardening inlet and out et valves coacting with t e respective seats, a single-acting plunger movable in the cylinder and lon er than the same, said plunger fitting the cylinder to confine all c linder clearance to the lower end of the cy inder below the plunger, means for reciprocating the plunger, said means being arranged to give the plunger a clearance at its lower end whose height is less than that of the transverse port, and alliquid seil device around the plunger at its upper en 2. In a pump, the combination, with a vertical cylinder having a transverse port extending upward from the lower end of the cylinder, of a valve-chest having inlet and outlet valve seats in vertical alinement with each other, and separated by an intervening space whose bottom wall is above the bottom of the cylinder and arranged to drain therein, with` which space the upper end of the transverse port connects, upward-opening inlet and outlet valves coasting with the respective seats, a single-acting lunger movable in the cylinder and longer t an the same, said plunger fitting the cylinder to confine all c linder clearance to the lower end of the cy inder below the plunger, means for reciprocating the plunger, said means being arran ed to give the plunger a clearance at its iower end whose height is less than that of the transverse port, and a liquid-seal device around the plunger at its upper end.

3. In a pump, the combination, with a vertical cylinder having a transverse ort extending upward from the lower end o the cylinder', of a valve-chest having inlet and outlet valve-seats separated' by an intervening space whose bottom walll is above the,

bottom'v of the' 'cylinder "and arranged tot@ "upperend of tho-plunger, an a liquid-holddaih therein, with whichspace the upper end-of the, transverse port connects, upward-o ening and outlet valve coact-y ing wit the-respective seats, a-s'ingle-cting plunger movable in thecylinder' and longer than the same, said plunger fitting the cylin-` der to confine all cylinder clearance to the lower`v end of the cylinder below the plunger, means for reciprocating the plunger, said` means-bein arranged to give the plunger a clearance its lower end whose height is less than thapof the transverse port, an outside packing device for the plunger anda liquid-holding basin having walls surrounding the packing device and spaced away laterally therefrom, said walls extending above Ehe packing and arranged to contain liquid at a level such that said liquid will Contact! with the plunger.

`4. In a pump, the combination, with a vertical cylinder having a transverse rt extending upward from the lower en of the cylinder, of a valve-chest having inlet and outlet valve seats separated by an intervening space whose bottom wall is above the bottom of thel cylinder and arranged to drain therein, with which space the upper end of the transverse port connects, upward opening inlet and outlet valves co- `acting plunger movable in the cylinder and longer than the same,said plunger fitting the cv luider to confine all cylinder clearance to tlie lower end of the cylinder below the plunger, slides above the plunger, an adjustable crosshead connected to the plunger and movable in the slides, means located at the upper face of thel crosehead for adjusting it in the slides, means for moving the crosshead plunger1 said means being arranged to give they lplunger ail-clearance atl its lower end whose `height is lessfthan that of the transverse port, anfoutside packin device at the ing basin' -liavinghlvalls surrounding the plunger? and' pac g device and spaced away literally therefrom, said walls extending above the packing device to hold liquid at a level auch that said linuid will conf-act with the plunger.

5. The combinatiomwith a three-cylinder single-acting outside packed plunger pump, an `means or drivin the plungers in threephase relation to eac other, each cylinder having an upwardly extending transverse port opening into' the lowerend of said cylinder, of a valve-chest having an inletchamber and an outlet-chamber, and a plurality of intermediate spaces, one for each cylinder, each connected to the u er end of the respective transverse port an aving its bottoni wall above the bottom of its respective cylinder, inlet valves between the inlet chamber and the respective intermediate spaces,VV outlet valves between the outlet chamber and the respective intermediate spaces, a liquid-holdin basin having walls surrounding the outsi e paokingdevicesof all the cylinders'and s aoed away laterally therefrom, Said basin ing above the acking devices, and means for causing a cxrculatotr'of liquid through said basin at a level s ch that said liquid will contact with the p un ers.

In testimong' whereof, I ave hereunto set my hand, in t e presence of two subscribing w1tnesses.

WILLS MQ FIJEMING.

Witnesss: A

' En .UND V; BAnNns,

RAitMoim H. Pnmonovn.

avng walls extendoutlet valvefseate sepdrafted"` 'by an inten' vening space whose bot-torn wall: is above the bottom .-of the i cylinder vand. arranged tol.;

dainftherein, with which 1 space' the upper endof `the4tr''alfieverse port "connects, up-

ward-'oening inletand" outlet valve count-j,-

at a level such that said liquid will contaci` with the plunger. Y 4, In a pump, the combination, with a vertical cylinder having a transverse port' extending upward from the lower-end of the cylinder, of a valve-chest having inlet and outlet valve seats separated by an inter` veningspace whose bottom wall is above the bottom of theA cylinder and arranged .to drain therein, with which space the upper end of the transverse port connects, upward opening inlet and outlet valves co- "actin'g plunger movable inthe cylinder vand longer than the same, said plunger fitting the. c' linder toconiine all cylinder clearance to4 t e lower 4endof the cylinder below the plunger, slides above the plunger, an adjustablev crosshead connected to the plunger and movable in the slides, means located at the upper face of thei crosshead for adjusting it` in,

the slides, Ineens forvrnoving the crosshead plunger, said means heling arranged to give the Patent Correction iniettare' Patent No. 1,109,672.

witnesses.

'the ''D'iungpe' ai? clearance ati its lower end Whose height is lessthan that of the trans- {verse port, anfoutsidepacking device at the uppelrend of the plunger, and a liquid-bolding begin yhavin Walls surroundingthe away laterally therefrom, said walls extend- 'ing above the packingdevice to hold liquid "atea lle'v'el'such that said lit-mid will contact with the plunger.

5. The combination,`with a threecylinder singlenctin, outside' packed plunger pump, an means or driving the plungels in threephase relation to eachother, each cylinderl having 'an upwardly extending transverse port Aopening into the lovv'er'end of said cylinder,` ofv a valve-cheet having an inletchalnber and an outlet-chamber, and a plurality of intermediate spaces, one for each cylinder, each connected to the upper' end of the respective transverse port and having its bottoni wallabove the bottom of its respective cylinder, inlet valves between theinlet chamber and the respective intermediate spaces," outlet valves between the outlet chamber and the reepactive4 intermediate spaces, a liquid-holdin basin having walls surrounding the ontsi e packingde'vm'es' of all the cylinders'and spaced away' laterally L plunger and/pac ng device andv spaced therefrom, said basin4 having Walls extendf ing above the packing-devices, and means for causing a circulationiof liquid through. saidbasin at a level such'that said liquid will Contact with thev plunversj.

In testimon whereo'chave hereunto set my hand, in t e presencefo two subscribing WILLS MgirLnMiNe.- 'Y Witnesses:

'l Enntnnie V. BARNES,

Rnxtnionn H. Pn'rrnonovn.

lt hereby certied that in Lettere Patent No. 1,109,672, granted September S, 191;, upon the application of Wills M. leining, of Holyoke, Massachusetts, for an iuinovement in Pumpsf? an error appears in the printed speciiicatlon requiring' coi'rection as follows: Page elf, line after the word acting?? insert the Wordsj walt/1r the inspectie@ seats, a singlenct'i'ng; and that the said Letters Patent should `be read with this correction therein that the saine may conforrn to the record ol the cese in Signed and eeaied this 13th deyof Qctober, A. l., i914.

rioting omvitcesoneof fixieren'.

Correction inietters Patent No. i,i09,672.

It is hereby certified that in Letters Pntent No. 1,109,672, granted September' S, 1914:, upon the applicationy f Wills M. Fleming, of Holyoke, Massachusetts, for an improvement in QPumpnf an error appears in the printed specification requiring coi'rectionas follows: Pa'ge 4, line 33, after the word acting insert the Wordswith the respective seats, a single-acting; and that the seid Letters )arent should be read with this correction therein that the same may confor-n1 no the th Patent onine.

Signed and sealed this 13th day of (rember, A. D., i914.

[SEAL] J. 'i'. NEW'ION, 

